001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.master.region;
019
020import java.io.IOException;
021import org.apache.hadoop.fs.FileStatus;
022import org.apache.hadoop.fs.FileSystem;
023import org.apache.hadoop.fs.Path;
024import org.apache.yetus.audience.InterfaceAudience;
025import org.slf4j.Logger;
026import org.slf4j.LoggerFactory;
027
028@InterfaceAudience.Private
029final class MasterRegionUtils {
030
031  private static final Logger LOG = LoggerFactory.getLogger(MasterRegionUtils.class);
032
033  private MasterRegionUtils() {
034  }
035
036  static void moveFilesUnderDir(FileSystem fs, Path src, Path dst, String suffix)
037    throws IOException {
038    if (!fs.exists(dst) && !fs.mkdirs(dst)) {
039      LOG.warn("Failed to create dir {}", dst);
040      return;
041    }
042    FileStatus[] archivedWALFiles = fs.listStatus(src);
043    if (archivedWALFiles == null) {
044      return;
045    }
046    for (FileStatus status : archivedWALFiles) {
047      Path file = status.getPath();
048      Path newFile = new Path(dst, file.getName() + suffix);
049      if (fs.rename(file, newFile)) {
050        LOG.info("Moved {} to {}", file, newFile);
051      } else {
052        LOG.warn("Failed to move from {} to {}", file, newFile);
053      }
054    }
055  }
056}